Durable Ingersoll hosts: efficient, stable, whose performance in the Chinese market has been modified by millions of computers with host customer validation and recognition of the air compressor. Precision drive systems: single Poly-V wide belt drive, compared with thin belts, stresses even more fragmented, more stable. High performance motors: class f insulation, class b temperature rise, protection class IP55, effectively prevents dust and water from entering the motor and prolong the service life of the motor.